/* eslint-disable indent */
<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区 -->
      <div class="avatar_box">
        <img src="../assets/logo.png" alt="" />
      </div>
      <!-- 登录表单区 -->
      <el-form
        ref="loginFormRef"
        :model="loginForm"
        :rules="loginFormRules"
        label-width="0px"
        class="login_form"
      >
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input
            v-model="loginForm.username"
            prefix-icon="iconfont icon-yonghuming"
          ></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input
            v-model="loginForm.password"
            prefix-icon="iconfont icon-mima"
            type="password"
          ></el-input>
        </el-form-item>
        <!-- 按钮注册 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data () {
    return {
      loginForm: {
        username: '',
        password: ''
      },
      loginFormRules: {
        // 验证用户名
        username: [{ required: true, message: '请输入登录名', trigger: 'blur' }, { min: 3, max: 10, message: '长度在3到10个字符', trigger: 'blur' }],
        password: [{ required: true, message: '请输入登录密码', trigger: 'blur' }, { min: 6, max: 15, message: '长度在3到10个字符', trigger: 'blur' }]
      }
    }
  },
  methods: {
    resetLoginForm () {
      this.$refs.loginFormRef.resetFields()
    },
    login () {
      this.$refs.loginFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.post('login', this.loginForm) // eslint-disable-line no-unused-vars
        if (res.meta.status !== 200) return this.$message.console.error('登录失败!')
        this.$message.success('登录成功!')
        console.log(res)
        // 1.将登录成功之后的token，保存到客户端的sessionStorage中
        // 1.1项目中出了登录之外的其他API接口，必须在登录之后才能访问
        // 1.2 token只应在当前网站打开期间生效，所以将token保存在sessionstorage中
        // 2.通过编程式导航跳转到后台主页，路由地址是/home
        window.sessionStorage.setItem('token', res.data.token)
        this.$router.push('/home')
      })
    }
  }
}
</script>
<style lang="less" scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}
.login_box {
  width: 450px;
  height: 300px;
  background-color: aliceblue;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 5%;
  transform: translate(-50%, 50%);

  .avatar_box {
    height: 130px;
    width: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;
    img {
      height: 130px;
      width: 130px;
      border-radius: 50%;
      background-color: #eee;
    }
  }
}
.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}
.btns {
  display: flex;
  justify-content: flex-end;
}
</style>
